Updated Stuttermark to v1.5. WARNING: This version of Stuttermark is
INCOMPATIBLE with output from previous versions of FDSTools and TSSV.

Introducing TSSV-Lite
* New tool tssv acts as a wrapper around TSSV-Lite (tssvl). Its primary
  purpose is to allow running TSSV-Lite without having to convert the
  FDSTools library to TSSV format, and to offer allelename output. Like
  all other tools in FDSTools, it also works with TSSV library files but
  its allele name generation capabilities are limited in that case.

Changed:
* TSSV-Lite and the new TSSV tool in FDSTools have two columns renamed
  w.r.t. the original TSSV program: 'name' has been changed to 'marker',
  and 'allele' has been changed to 'sequence'. All tools in FDSTools
  have been updated to use the new column names. This change affects
  Allelefinder, BGCorrect, BGEstimate, BGHomRaw, BGHomStats, BGPredict,
  Blame, Samplestats, Samplevis, Stuttermark, Stuttermodel, and
  Seqconvert. Note that this change will BREAK COMPATIBILITY of these
  tools with old data files.

Fixed:
* In Samplevis HTML visualisations, the "percentage recovery" table
  filtering option used the absolute number of recovered reads instead.
* Added PctRecovery to the tables in Samplevis HTML visualisations.
* BGPredict will now print a nice error message if the -n/--min-pct
  option is set to zero or a negative number, to avoid division by zero.
* Samplestats would crash if the input file contained the flags column.
* FDSTools would crash when trying to convert sequences to allele names
  using a TSSV library.

Improved:
* Libconvert will no longer include duplicate sequences in the STR
  defenition when converting to TSSV format and the reference sequence
  of one of the markers is the same as one of its aliases, or when
  aliases of one marker share one or more prefix or suffix sequences.
* Updated add_input_output_args() such that the output file is a
  positional argument (instead of -o) for tools that have a single input
  file and no support for batches.
* Updated add_sequence_format_args() such that the library file can be
  made a required argument.
* Refined the FDSTools package description, since FDSTools does more
  than just noise filteirng.
* FDSTools will now do a marginally better job at producing allele names
  for sequences that do not exactly match the provided STR pattern. When
  seeking the longest matching portion of the sequence, it will now also
  test the reversed sequence with a reversed pattern, which sometimes
  yields a longer match. It is still not optimal, though, but some
  refactoring has been done to move away from regular expressions.
* BGCorrect will now also fill in correction_flags for newly added
  sequences.
* Adjusted the help text of Samplestats to include the fact that the -c
  and -y options have an OR relation instead of an AND relation.
* BGCorrect, BGEstimate, BGHomRaw, BGHomStats, BGPredict, and
  Stuttermodel will now ignore special values that may appear in the
  place of a sequence (currently: 'Other sequences' and 'No data').

Removed:
* The -m/--marker-column and -a/--allele-column arguments of BGPredict
  had no effect and have been removed.

Visualisations:
* Updated bundled D3 to v3.5.12.
* In HTML visualisations, if the page is scrolled to the right edge when
  an option is changed that causes the graphs to become wider, the page
  now remains scrolled to the right.
* Samplevis HTML visualisations:
  * Added 'Clear manually added/removed' link to the table filtering.
  * Reduced flicker of the mouse cursor in Internet Explorer.
  * Added 'Common axis range' checkbox (only available when 'Split
    markers' is off).
  * Added 'Save table' link to save the table of selected alleles to a
    tab-separated file.
  * Added 'PctRecovery' column to the tables of selected alleles.
  * An alert box is now shown when a data file is loaded that contains
    markers that have 'No data'.
  * Added 'Percentage of total reads' to the graph filtering options.
  * Added a note to the table filtering options to explain that the
    minimum percentage correction and recovery have an OR relation.